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https://www.readbyqxmd.com/read/28454060/heated-humidified-high-flow-nasal-cannula-oxygen-after-thoracic-surgery-a-randomized-prospective-clinical-pilot-trial
#1
Jason Brainard, Benjamin K Scott, Breandan L Sullivan, Ana Fernandez-Bustamante, Jerome R Piccoli, Morris G Gebbink, Karsten Bartels
BACKGROUND: Thoracic surgery patients are at high-risk for adverse pulmonary outcomes. Heated humidified high-flow nasal cannula oxygen (HHFNC O2) may decrease such events. We hypothesized that patients randomized to prophylactic HHFNC O2 would develop fewer pulmonary complications compared to conventional O2 therapy. METHODS AND PATIENTS: Fifty-one patients were randomized to HHFNC O2 vs. conventional O2. The primary outcome was a composite of postoperative pulmonary complications...
April 19, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28453992/salinomycin-overcomes-radioresistance-in-nasopharyngeal-carcinoma-cells-by-inhibiting-nrf2-level-and-promoting-ros-generation
#2
Gong Zhang, Wenjun Wang, Chunxiao Yao, Jinjin Ren, Shuping Zhang, Muyuan Han
Radiotherapy is the most important treatment for nasopharyngeal carcinoma (NPC). Radioresistant cancer cells have been shown to potentially result in residual disease that can lead to recurrence and metastasis. Salinomycin (SAL) has been identified as a promising anticancer drug during chemical screening, but it is unclear whether SAL plays a role in radioresistance. The nuclear factor erythroid-2-related factor 2 (Nrf2) is a crucial regulator of the cellular antioxidant system. There are currently numerous data indicating that Nrf2 has an important role in cancer radioresistance...
April 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28453380/lipids-on-the-second-day-in-ischemic-and-normoxemic-term-neonates
#3
Miljana Z Jovandaric, Tatjana V Nikolic, Svetlana Milenkovi, Biljana Otaševi, Violeta V Bankovic, Petar I Ivanovski, Milos M Jesic
INTRODUCTION: In hypoxic newborns requiring oxygen, lipid peroxidation affects the peripheral blood lipids. OBJECTIVES: Determine the influence of perinatal oxygen therapy for hypoxia on serum lipid concentrations on the second day of life. MATERIALS AND METHODS: Our study included 50 newborns with perinatal hypoxia requiring oxygen and 50 healthy newborns without oxygen therapy. Arterialized capillary blood was taken for categorization of hypoxia (pO2) after birth in both groups...
April 28, 2017: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/28449516/long-term-oxygen-therapy-it-is-still-relevant
#4
EDITORIAL
Surinder K Jindal
No abstract text is available yet for this article.
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449046/prone-positioning-as-a-bridge-to-recovery-from-refractory-hypoxaemia-following-lung-transplantation%C3%A2
#5
Jordi Riera, Carolina Maldonado, Cristopher Mazo, María Martínez, Jaume Baldirà, Leonel Lagunes, Salvador Augustin, Antonio Roman, Maria Due, Jordi Rello, Deborah J Levine
OBJECTIVES: Refractory hypoxaemia is the leading cause of mortality in the postoperative period after lung transplantation. The role of prone positioning as a rescue therapy in this setting has not been assessed. We evaluated its effects in lung transplant recipients presenting refractory hypoxaemia following the surgery. METHODS: Prospectively collected data from 131 consecutive adult patients undergoing lung transplantation between January 2013 and December 2014 were evaluated...
April 25, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28448635/excited-state-dynamics-of-bis-dehydroxycurcumin-tert-butyl-ester-a-diketo-shifted-derivative-of-the-photosensitizer-curcumin
#6
Luca Nardo, Angelo Maspero, Andrea Penoni, Giovanni Palmisano, Erika Ferrari, Monica Saladini
Bis-dehydroxycurcumin tert-butyl ester (K2T23) is a derivative of the natural spice curcumin. Curcumin is widely studied for its multiple therapeutic properties, including photosensitized cytotoxicity. However, the full exploitation of curcumin phototoxic potential is hindered by the extreme instability of its excited state, caused by very efficient non radiative decay by means of transfer of the enolic proton to the nearby keto oxygen. K2T23 is designed to exhibit a tautomeric equilibrium shifted toward the diketo conformers with respect to natural curcumin...
2017: PloS One
https://www.readbyqxmd.com/read/28448266/a-prospective-randomized-blinded-controlled-trial-comparing-transdermal-continuous-oxygen-delivery-to-moist-wound-therapy-for-the-treatment-of-diabetic-foot-ulcers
#7
Vickie R Driver, Alexander Reyzelman, Jill Kawalec, Michael French
Worldwide, diabetic foot ulcers (DFUs) continue to exact a major burden on patients and health care providers. Although hyperbaric oxygen therapy is well-known as an adjunct option, less is known about the efficacy of transdermal continuous oxygen therapy (TCOT). A prospective, randomized, blinded, multicenter, parallel study was conducted from October 2009 to November 2012 to evaluate healing time and the proportion of DFUs healed after 12 weeks of moist wound therapy (MWT) with or without TCOT. Study participants (persons with type 1 or type 2 diabetes and a nonhealing [>1-month but <1-year duration], 1 cm² to 10 cm² in area, infection-free DFU) were randomized to TCOT or a sham device (control) in addition to receiving MWT...
April 2017: Ostomy/wound Management
https://www.readbyqxmd.com/read/28448064/changes-in-thyroid-hormone-concentrations-during-neonatal-extracorporeal-membrane-oxygenation
#8
L Leeuwen, A F J van Heijst, J van Rosmalen, Y B de Rijke, L W J E Beurskens, D Tibboel, E L T van den Akker, H IJsselstijn
OBJECTIVE: Thyroid hormone concentrations can be disturbed during critical illness. Our aim was to determine changes in thyroid hormone concentrations during neonatal extracorporeal membrane oxygenation (ECMO). STUDY DESIGN: We included 21 ECMO-treated neonates. Age-specific s.d. scores (SDS) of free and total thyroxine (FT4; TT4), reverse and total triiodothyronine (rT3; TT3), thyroid-stimulating hormone (TSH) and thyroxine-binding globulin (TBG) were determined at six fixed time-points...
April 27, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28447930/a-novel-and-simple-method-for-tracheal-intubation-in-a-swine-model-preparing-for-the-era-of-xenotransplantation
#9
Hyub Huh, Hyong Hwan Lim, Ji Yeong Kim, Hye Won Shin, Hae Ja Lim, Suk Min Yoon, Seung Zhoo Yoon, Hye Won Lee
OBJECTIVES: Organ transplant in humans is an established therapy for a variety of end-stage organ diseases. However, due to organ shortages and lack of donors, the need for xenotransplant has gradually increased. Xenotransplantation has great potential to solve many of the problems facing organ transplantation. Pigs are being developed as xenogeneic organ donors for use in humans. In this study, we propose a novel and simple method for tracheal intubation in a swine model using neuromuscular blocking agents and laryngeal mask airway...
April 27, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28447229/pathogenic-role-and-therapeutic-potential-of-pleiotrophin-in-mouse-models-of-ocular-vascular-disease
#10
Weiwen Wang, Michelle E LeBlanc, Xiuping Chen, Ping Chen, Yanli Ji, Megan Brewer, Hong Tian, Samantha R Spring, Keith A Webster, Wei Li
Angiogenic factors play an important role in the pathogenesis of diabetic retinopathy (DR), neovascular age-related macular degeneration (nAMD) and retinopathy of prematurity (ROP). Pleiotrophin, a well-known angiogenic factor, was recently reported to be upregulated in the vitreous fluid of patients with proliferative DR (PDR). However, its pathogenic role and therapeutic potential in ocular vascular diseases have not been defined in vivo. Here using corneal pocket assays, we demonstrated that pleiotrophin induced angiogenesis in vivo...
April 26, 2017: Angiogenesis
https://www.readbyqxmd.com/read/28447122/an-overview-of-the-role-of-lipid-peroxidation-derived-4-hydroxynonenal-in-osteoarthritis
#11
REVIEW
Jamilah Abusarah, Mireille Bentz, Houda Benabdoune, Patricia Elsa Rondon, Qin Shi, Julio C Fernandes, Hassan Fahmi, Mohamed Benderdour
BACKGROUND: Over the years, many theories have been proposed and examined to better explain the etiology and development of osteoarthritis (OA). The characteristics of joint destruction are one of the most important aspects in disease progression. Therefore, investigating different factors and signaling pathways involved in the alteration of extracellular matrix (ECM) turnover, and the subsequent catabolic damage to cartilage holds chief importance in understanding OA development. Among these factors, reactive oxygen species (ROS) have been at the forefront of the physiological and pathophysiological OA investigation...
April 26, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28446926/are-we-ready-for-the-eras-protocol-in-colorectal-surgery
#12
Michał Kisielewski, Mateusz Rubinkiewicz, Michał Pędziwiatr, Magdalena Pisarska, Marcin Migaczewski, Marcin Dembiński, Piotr Major, Kazimierz Rembiasz, Andrzej Budzyński
INTRODUCTION: Modern perioperative care principles in elective colorectal surgery have already been established by international surgical authorities. Nevertheless, barriers to the introduction of routine evidence-based clinical care and changing dogmas still exist. One of the factors is the surgeon. AIM: To assess perioperative care trends in elective colorectal surgery among general surgery consultants in surgical departments in Malopolska Voivodeship, Poland...
2017: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/28446224/immunosuppressive-capacity-of-mesenchymal-stem-cells-correlates-with-metabolic-activity-and-can-be-enhanced-by-valproic-acid
#13
Madeleine C Killer, Philipp Nold, Katharina Henkenius, Lea Fritz, Tabea Riedlinger, Christina Barckhausen, Miriam Frech, Holger Hackstein, Andreas Neubauer, Cornelia Brendel
BACKGROUND: Mesenchymal stem cells (MSCs) have entered the clinic as an Advanced Therapy Medicinal Product and are currently evaluated in a wide range of studies for tissue regeneration or in autoimmune disorders. Various efforts have been made to standardize and optimize expansion and manufacturing processes, but until now reliable potency assays for the final MSC product are lacking. Because recent findings suggest superior therapeutic efficacy of freshly administered MSCs in comparison with frozen cells, we sought to correlate the T-cell suppressive capacity of MSCs with their metabolic activity...
April 26, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28444901/pge2-receptor-subtype-1-ep1-regulates-mesenchymal-stromal-cell-osteogenic-differentiation-by-modulating-cellular-energy-metabolism
#14
M Feigenson, R A Eliseev, J H Jonason, B N Mills, R J O'Keefe
Mesenchymal stromal cells (MSCs) are multipotent progenitors capable of differentiation into osteoblasts and can potentially serve as a source for cell-based therapies for bone repair. Many factors have been shown to regulate MSC differentiation into the osteogenic lineage such as the Cyclooxygenase-2 (COX2)/Prostaglandin E2 (PGE2) signaling pathway that is critical for bone repair. PGE2 binds four different receptors EP1-4. While most studies focus on the role PGE2 receptors EP2 and EP4 in MSC differentiation, our study focuses on the less studied, receptor subtype 1 (EP1) in MSC function...
April 26, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28444786/targeted-photodynamic-therapy-with-a-folate-sensitizer-assembly-produced-from-mesoporous-silica
#15
Salvatore Sortino, Chunfang Zhou, Damien Afonso, Sabrina Valetti, Adam Feiler, Venera Cardile, Adriana Graziano, Sabrina Conoci
A mesoporous silica material prepared by using folic acid (FA) as a template enables the effective encapsulation of meso-tetrakis(4-carboxyphenyl)porphyrin (TCPP) in its interior. Combination of steady-state and time-resolved absorption and emission spectroscopy demonstrate that FA and TCPP are released from the silica material to aqueous phase in the form of a non-covalent assembly. This assembly does not form by simple mixing of the two components in the absence of silica, suggesting the key role of the material in the assembling process...
April 26, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28443953/flexible-bronchoscopy-and-mechanical-ventilation-in-managing-mounier-kuhn-syndrome-a-case-report
#16
Aslihan Gürün Kaya, Aydin Çiledağ, Çetin Atasoy, Demet Karnak
CONTEXT: Mounier-Kuhn syndrome is a rare congenital condition with distinct dilatation and diverticulation of the tracheal wall. The symptoms may vary and the treatment usually consists of support. CASE REPORT: The patient was a 60-year-old male with recurrent hospital admission. He was admitted in this case due to dyspnea, cough and sputum production. An arterial blood sample revealed decompensated respiratory acidosis with moderate hypoxemia. A chest computed tomography (CT) scan showed dilatation of the trachea and bronchi, tracheal diverticula and bronchiectasis...
April 20, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28443665/octakis-2-pyridyl-porphyrazine-and-its-neutral-metal-derivatives-uv-visible-spectral-electrochemical-and-photoactivity-studies
#17
Fabiola Sciscione, Lei Cong, Maria Pia Donzello, Elisa Viola, Claudio Ercolani, Karl M Kadish
Tetrapyrrolic porphyrazine macrocycles with externally appended 2-pyridyl rings were synthesized and characterized as to their spectroscopic, electrochemical, and photophysical properties. The investigated compounds are represented as [Py8PzH2], the unmetalated octakis(2-pyridyl)porphyrazine, and the metal complexes [Py8PzM], where M is Mg(II)(H2O), Cu(II), Zn(II), or Co(II). The spectroscopic properties and the electrochemical behavior of these compounds were examined in solution of polar (pyridine, dimethyl sulfoxide, and dimethylformamide) and nondonor solvents (CHCl3, CH2Cl2), and the data were compared with those obtained from earlier studies on the related tetrapyrazinoporphyrazines, [Py8TPyzPzM], and the tetraquinoxalinoporphyrazines, [Py8QxPzM], also bearing externally 2-pyridyl rings, and characterized by a more extended central π-conjugated macrocyclic framework...
April 26, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28443559/the-evolution-of-modern-respiratory-care-for-preterm-infants
#18
REVIEW
Louise S Owen, Brett J Manley, Peter G Davis, Lex W Doyle
Preterm birth rates are rising, and many preterm infants have breathing difficulty after birth. Treatments for infants with prolonged breathing difficulty include oxygen therapy, exogenous surfactant, various modes of respiratory support, and postnatal corticosteroids. In this Series paper, we review the history of neonatal respiratory care and its effect on long-term outcomes, and we outline the future direction of the research field. The delivery and monitoring of oxygen therapy remains controversial, despite being in use for more than 50 years...
April 22, 2017: Lancet
https://www.readbyqxmd.com/read/28443327/acidity-triggered-tumor-retention-internalization-of-chimeric-peptide-for-enhanced-photodynamic-therapy-and-real-time-monitoring-of-therapeutic-effects
#19
Kai Han, Wei-Yun Zhang, Zhao-Yu Ma, Shi-Bo Wang, Lu-Ming Xu, Jia Liu, Xianzheng Zhang, Heyou Han
Photodynamic therapy (PDT) holds great promise in tumor treatment. Nevertheless, it remains highly desirable to develop easy-to-fabricated PDT systems with improved tumor accumulation/internalization and timely therapeutic feedback. Here, we report a tumor acidity responsive chimeric peptide for enhanced PDT and noninvasively real-time apoptosis imaging. Both in vitro and in vivo studies revealed that tumor mildly acidic microenvironment could trigger rapid protonation of carboxylate anion in chimeric peptide, which led to increased zeta potential, improved hydrophobicity, controlled size enlargement and precise morphology switch from sphere to spherocylinder shape of chimeric peptide...
April 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28443291/a-review-of-the-development-of-tumor-vasculature-and-its-effects-on-the-tumor-microenvironment
#20
REVIEW
Jake C Forster, Wendy M Harriss-Phillips, Michael Jj Douglass, Eva Bezak
BACKGROUND: The imbalance of angiogenic regulators in tumors drives tumor angiogenesis and causes the vasculature to develop much differently in tumors than in normal tissue. There are several cancer therapy techniques currently being used and developed that target the tumor vasculature for the treatment of solid tumors. This article reviews the aspects of the tumor vasculature that are relevant to most cancer therapies but particularly to vascular targeting techniques. MATERIALS AND METHODS: We conducted a review of identified experiments in which tumors were transplanted into animals to study the development of the tumor vasculature with tumor growth...
2017: Hypoxia
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